Measurement-computing CIO-DAS16/M1/16 Bedienungsanleitung PDF herunterladen (Seite 22)

Input High 2.0 volts min, 5.5 volts absolute max

Input Low 0.8 volts max, −0.5 volts absolute min

Interrupts Programmable levels 2 to 7, 10 to12, 14, 15; Positive-edge triggered

Interrupt enable Programmable

Interrupt sources A/D End-of-conversion, A/D FIFO half full, A/D Residual Counter

Counter

section

Counter type 82C54

Configuration 3 down-counters, 16 bits each

Counter 0 - General purpose counter or ADC residual sample counter when using

REPINSW.

Source: Programmable: external (CTR0IN), internal (1 MHz osc) or ADC

pacer (when using REPINSW).

Gate: Programmable source: external (DIN2) or internal (when using

REPINSW)

Output: Programmable: user connector, end-of-acquisition interrupt (when

using REPINSW).

Counter 1 - ADC Pacer Lower Divider

Source: 10 MHz oscillator

Gate: Tied to Counter 2 gate, programmable source: external (DIN1) or

internal.

Output: Chained to Counter 2 Clock.

Counter 2 - ADC Pacer Upper Divider

Source: Counter 1 Output.

Gate: Tied to Counter 1 gate, programmable source: external (DIN1) or

internal.

Output: ADC Pacer clock, output available at user connector (CTR2 Out).

Clock input frequency 10 Mhz max

High pulse width (clock input) 30 ns min

Low pulse width (clock input) 50 ns min

Gate width high 50 ns min

Gate width low 50 ns min

Input low voltage 0.8V max

Input high voltage 2.0V min

Output low voltage 0.4V max

Output high voltage 3.0V min

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Measurement-computing CIO-DAS16/M1/16 Bedienungsanleitung Seite 22